round number
"Round numbers" are often used for simplicity in calculations, estimations, and everyday language due to their ease of use and memorability.
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Definition
A2General Use
(informal, everyday)A number that ends in one or more zeros.
Example
- The population of the city is a round number: 100,000.
- He asked for a round number, like 50 or 100.
B1Estimation
(informal, everyday)A number that has been approximated to the nearest ten, hundred, thousand, etc.
Example
- Let's round the total cost to the nearest hundred for simplicity.
- She estimated her expenses to be around a round number like 500 dollars.
B2Mathematics
(technical, academic)An integer that ends in zero, making it easier for calculations.
Example
- In our calculations, we often use round numbers to simplify the process.
- A round number like 1000 is easier to work with in mathematical problems.
B1Psychology and Culture
(informal, cultural)A number preferred for its simplicity and ease of remembrance.
Example
- Prices often end in round numbers because they are easier for customers to remember.
- Milestone birthdays like 30 or 50 are round numbers and often celebrated with special significance.
Similar
Terms that have similar or relatively close meanings to "round number":
round offround inround uprounding errorrounded upnumber closeround outrounded downsignificant figurereal number